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Mark S. Udevitz Title: Research Statistician (Biology) Address: 4210 University Dr., Anchorage, AK 99508-4626 Phone: (907) 786-7083 Fax: (907) 786-7150 Email: mudevitz@usgs.gov

Methods for sampling, estimating parameters, and modeling dynamics of wildlife populations.

Udevitz, M. S., D. M. Burn, and M. A. Webber. 2008. Estimation of walrus populations on sea ice with infrared imagery and aerial photography. Marine Mammal Science 24:57-70.

Udevitz, M. S., B. Shults, L. G. Adams, and C. Kleckner. 2006. Evaluation of aerial survey methods for Dall's sheep in Alaska. Wildlife Society Bulletin 34:732-740.

Burn, D. M., M. A. Webber, and M. S. Udevitz. 2006. Application of airborne thermal imagery to surveys of Pacific walrus. Wildlife Society Bulletin 34(1):51-58.

Udevitz, M. S., C. V. Jay, and M. B. Cody. 2005. Observer variability in pinniped counts: ground-based enumeration of walruses at haul-out sites. Marine Mammal Science 21(1):108-120.

Kleckner, C., M. Udevitz, L. Adams, and B. Shults. 2003. Demography of Dall’s sheep in northwestern Alaska. Arctic Research 16:68-73.

Udevitz, M. S. 2002. Abundance: population size and density estimation. Pages 4-11 in A. H. El-Shaarawi and W. W. Piegorsch, editors. Encyclopedia of Environmetrics, Volume 1. John Wiley & Sons, New York, New York.

Udevitz, M. S. 2002. Change-in-ratio. Pages 322-324 in A. H. El-Shaarawi and W. W. Piegorsch, editors. Encyclopedia of Environmetrics, Volume 1. John Wiley & Sons, New York, New York.

Udevitz, M. S., J. R. Gilbert, and G. A. Fedoseev. 2001. Comparison of methods used to estimate numbers of walruses on sea ice. Marine Mammal Science 17(3):601-616.

Bodkin, J. L., and M. S. Udevitz. 1999. An aerial survey method to estimate sea otter abundance. Pages 13-26 in G. W. Garner, S. C. Amstrup, J. L. Laake, B. F. J. Manly, L. L. McDonald and D. G. Robertson, editors. Marine Mammal Survey and Assessment Methods. A. A. Balkema, Rotterdam, Netherlands.

Udevitz, M. S. 1999. Modeling variability in replicated surveys at aggregation sites. Pages 167-177 in G. W. Garner, S. C. Amstrup, J. L. Laake, B. F. J. Manly, L. L. McDonald and D. G. Robertson, editors. Marine Mammal Survey and Assessment Methods. A. A. Balkema, Rotterdam, Netherlands.

Udevitz, M. S., and B. E. Ballachey. 1998. Estimating survival rates with age-structure data. Journal of Wildlife Management 62(2):779-792.

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